Tlaloc - Tlaloc was the Aztec god of Rain, and therefore, of harvest. The Aztecs seemed to think that sacrificing babies to him was a good idea because they thought that their tears would please him. Not sure how that worked out.
Huitzilpochtli - This guy was the Aztec sun god. They held annual festivals in honor of Huitzilpochtli, where they would sacrifice thousand of victims. El Templo Mayor, the center of the Aztec empire, was built in honor of Huitzilpochtli and Tlaloc.
Quetzalcoatl - Quetzalcoatl is a very confusing god. Many people have had to speculate what he even does. That mystery is, however, not a mystery. He is the god of light, justice, mercy and wind.
Xolotl - He is the Hades, Pluto, Osiris, etc. of the Aztec pantheon. He is the god responsible for guiding people to Mictlan, the Aztec afterlife.
Pulque - For you gamers that play The Elder Scrolls, this guy is the equivalent of Sanguine. He was named after the Aztec alcoholic drink, pulque, and is therefore the god of drinking.
For those of you who want to see more Aztec gods, see the links below.http://www.mexicolore.co.uk/aztecs/home